diff --git a/bip/tests/__init__.py b/bip/tests/__init__.py
index 4428cf8d0e915a7d908a4b61ea333583fbf3f39f..cc9623cc080ddfb54f39f6f50597381f170ea0ac 100644
--- a/bip/tests/__init__.py
+++ b/bip/tests/__init__.py
@@ -11,12 +11,14 @@ import            tempfile
 
 
 def touch(fpath):
+    """Create a dummy file at fpath."""
     with open(fpath, 'wt') as f:
         f.write(fpath)
 
 
 @contextlib.contextmanager
 def tempdir():
+    """Create and change into a temp directory, deleting it afterwards."""
     prevdir = os.getcwd()
     with tempfile.TemporaryDirectory() as td:
         os.chdir(td)
@@ -28,6 +30,7 @@ def tempdir():
 
 @contextlib.contextmanager
 def mock_directory(contents):
+    """Create a temp directory with dummy contents."""
     with tempdir() as td:
         for c in contents:
             touch(c)
@@ -35,8 +38,7 @@ def mock_directory(contents):
 
 
 def dicts_equal(da, db):
+    """Compare two dicts, ignoring order."""
     da = {k : da[k] for k in sorted(da.keys())}
     db = {k : db[k] for k in sorted(db.keys())}
-    print(da)
-    print(db)
     return da == db
diff --git a/bip/tests/test_bip_utils_config.py b/bip/tests/test_bip_utils_config.py
index 6ef4744713ff1b93d1b0d39ecde6f440941cb073..7718106c045400b430a0f53b78a24c410114d7cf 100644
--- a/bip/tests/test_bip_utils_config.py
+++ b/bip/tests/test_bip_utils_config.py
@@ -245,6 +245,10 @@ def test_Config_create():
         for k, v in exp.items():
             assert cfg[k] == v
 
+    with tempdir():
+        cfg = config.Config('.')
+        assert len(cfg) == 0
+
 
 def test_Config_overrides():
     configtoml = tw.dedent("""
@@ -315,4 +319,50 @@ def test_Config_overrides():
 
 
 def test_Config_access():
-    pass
+    configtoml = tw.dedent("""
+    param1 = 1
+    param2 = 'abc'
+    param3 = [1, 2, 3]
+    [abc]
+    param1 = true
+    param2 = 0.4
+    """).strip()
+
+    exp = {
+        'param1'     : 1,
+        'param2'     : 'abc',
+        'param3'     : [1, 2, 3],
+        'abc_param1' : True,
+        'abc_param2' : 0.4,
+    }
+
+    with tempdir() as td:
+        open('config.toml', 'wt').write(configtoml)
+
+        cfg = config.Config('.')
+
+        assert cfg.cfgdir == td
+        assert len(cfg) == len(exp)
+
+        assert sorted(cfg.keys())  == sorted(exp.keys())
+        assert sorted(cfg.items()) == sorted(exp.items())
+
+        # Order of exp is intentional, to
+        # match config construction order.
+        assert [v1 == v2 for v1, v2 in zip(cfg.values(), exp.values())]
+
+        for k, v in exp.items():
+            assert k in cfg
+            assert cfg[k]          == v
+            assert getattr(cfg, k) == v
+            assert cfg.get(k)      == v
+
+        assert cfg.getall(param1=0, param2=1, param4=3) == \
+            {'param1' : 1, 'param2' : 'abc', 'param4' : 3}
+
+        assert cfg.gettuple(param1=0, param2=1, param4=3) == (1, 'abc', 3)
+
+        assert cfg.getall('abc', param1=0, param2=1, param3=3) == \
+            {'param1' : True, 'param2' : 0.4, 'param3' : 3}
+        assert cfg.gettuple('abc', param1=0, param2=1, param4=3) == \
+            (True, 0.4, 3)